tourmaline
noun
tour·ma·line
ˈtu̇r-mə-lən 
-ˌlēn
: a mineral of variable color that consists of a complex borosilicate and is valued as a gem when transparent and cut
Examples of tourmaline in a Sentence
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If that’s not enough, the elaborate, colorful jewel boasts an arrangement of green tourmaline, small diamonds, rare baroque South Sea pearls, sapphires, aquamarines, Paraiba tourmalines and tsavorites.
—
Anthony Demarco, Forbes.com, 11 May 2025
Colored gems dominated the top lots led by two paraiba tourmalines of Mozambique origin, two Burmese sapphires and an emerald.
—Anthony Demarco, Forbes.com, 13 May 2025
Staying cool Cooling-free infrared detectors have been around since before World War II and mostly relied on pyroelectric materials like tourmaline that change their temperature upon absorbing infrared radiation.
—ArsTechnica, 1 May 2025
Crafted in platinum-iridium and embellished with white diamonds, the piece dates to the 1910s and was paired with platinum and diamond earrings, bracelet and ring, as well as a diamond and platinum ring that highlighted a pink tourmaline.
—Laurie Brookins, The Hollywood Reporter, 7 Mar. 2025
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Anthony Demarco, Forbes.com, 11 May 2025
Colored gems dominated the top lots led by two paraiba tourmalines of Mozambique origin, two Burmese sapphires and an emerald.
—Anthony Demarco, Forbes.com, 13 May 2025
Staying cool Cooling-free infrared detectors have been around since before World War II and mostly relied on pyroelectric materials like tourmaline that change their temperature upon absorbing infrared radiation.
—ArsTechnica, 1 May 2025
Crafted in platinum-iridium and embellished with white diamonds, the piece dates to the 1910s and was paired with platinum and diamond earrings, bracelet and ring, as well as a diamond and platinum ring that highlighted a pink tourmaline.
—Laurie Brookins, The Hollywood Reporter, 7 Mar. 2025
See All Example Sentences for tourmaline
Cite this Entry
“Tourmaline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tourmaline. Accessed 12 Jun. 2025.
Copy CitationKids Definition
tourmaline
noun
tour·ma·line
ˈtu̇r-mə-lən
-ˌlēn
: a mineral of variable color that makes a striking gem when transparent and cut
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